The voltage on my bike drops dramatically when I turn on highbeam while on tickover. It's generally around 14.6v on tickover without lights, turn them on and still OK but when I turn on highbeam and after 4 seconds it drops to 11.6v and I have to rev the bike to raise the volts. I know the lights will drop the voltage but this seems a bit much to me. The stator has been rewound and i have fitted a new battery, new genuine reg/rec, new coils and caps.. Like Zeus, my pgm's arent lasting very long and I'm wondering if this may be the reason.